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cgroup: Do not depend on a given order when populating the subsys array 

The *_subsys_id will be used as index to access the subsys. Therefore
we need to care we populate the subsystem at the correct position by
using designated initialization.

With this change we are able to interleave builtin and modules in the subsys
array.

Signed-off-by: Daniel Wagner <daniel.wagner@bmw-carit.de>
Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Li Zefan <lizefan@huawei.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Cc: Gao feng <gaofeng@cn.fujitsu.com>
Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Cc: John Fastabend <john.r.fastabend@intel.com>
Cc: netdev@vger.kernel.org
Cc: cgroups@vger.kernel.org
This commit is contained in:
Daniel Wagner 2012-09-12 16:12:06 +02:00 committed by Tejun Heo
parent 5fc0b02544
commit 80f4c87774
1 changed files with 1 additions and 1 deletions
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2
kernel/cgroup.c
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@ -92,7 +92,7 @@ static DEFINE_MUTEX(cgroup_root_mutex);
* registered after that. The mutable section of this array is protected by
* cgroup_mutex.
*/
#define SUBSYS(_x) &_x ## _subsys,
#define SUBSYS(_x) [_x ## _subsys_id] = &_x ## _subsys,
#define IS_SUBSYS_ENABLED(option) IS_BUILTIN(option)
static struct cgroup_subsys *subsys[CGROUP_SUBSYS_COUNT] = {
#include <linux/cgroup_subsys.h>